Steam inlet condensate discharge structure of steam rotary dryer
By designing the steam-injected condensate discharge structure of the rotary joint, buffer chamber and partition in the steam rotary dryer, the independent discharge of steam and condensate is achieved by using the water-vapor isolation ring and water-absorbing elbow, the problem of condensate entrainment is solved and the drying efficiency is improved.
Patent Information
- Application Number
- CN202421728057.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing steam rotary dryers are prone to inducing condensate during the steam entering, affecting the drying effect of the material.
A steam-injected condensate discharge structure including a rotary joint, a buffer chamber and a partition is designed. Through the separation design of the steam channel and the condensate channel, the independent discharge of steam and condensate is achieved using a water vapor isolation ring and a water-absorbing elbow.
It effectively avoids condensate entrainment during steam entering, improves condensate discharge effect, and improves material drying efficiency.
Smart Images
Figure CN222895478U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steam inlet condensate discharge structure of a steam rotary dryer, belonging to the technical field of steam rotary dryers. Background Art
[0002] The steam rotary dryer uses steam to exchange heat indirectly with the heated material. After the steam exchange heat, the latent heat is released and it becomes condensed water. In the existing steam rotary dryer, steam is introduced into the inner cavity of the dryer through a rotary joint. After the steam exchange heat, it becomes condensed water which is not easy to discharge and will affect the drying effect of the material. Moreover, the condensed water will also cause the condensate to be entrained during the steam entry process, further affecting the drying effect of the material. Utility Model Content
[0003] The utility model aims to provide a steam inlet condensate discharge structure of a steam rotary dryer, which can realize steam inlet and condensate discharge, avoid condensate entrainment caused by steam inlet process, and improve condensate discharge effect.
[0004] The utility model adopts the following technical scheme: a steam inlet condensate discharge structure of a steam rotary dryer, comprising a rotary joint, a steam channel and a condensate channel are arranged in the rotary joint, a buffer chamber is connected between the rotary joint and the inner cavity of the dryer, a vertical partition is arranged in the buffer chamber, the partition divides the space in the buffer chamber into a first chamber and a second chamber, an air inlet hole is opened on the partition to connect the first chamber and the second chamber, the air inlet hole is located on one side of the first chamber and is connected to an air guide channel, a water vapor isolation ring is fixed on the outer side of the air guide channel, and the water vapor isolation ring is connected to the first chamber and the second chamber. The partition is arranged at intervals, the rotary joint is rotatably matched with the wall of the second chamber, the outlet of the steam channel of the rotary joint faces the air guide channel, an air inlet channel is connected between the dryer inner cavity and the first chamber, a drainage channel is connected between the dryer inner cavity and the second chamber, one end of the drainage channel is connected to the dryer inner cavity, and the other end is located between the partition and the water vapor isolation ring, a water suction elbow is connected to the inlet of the condensate channel of the rotary joint, the water suction elbow is located in the second chamber, and the water inlet of the water suction elbow is arranged downward and has a gap between it and the wall of the second chamber.
[0005] The buffer chamber is a cylindrical structure with a horizontal axis.
[0006] The axes of the buffer chamber and the rotary joint coincide with the axis of the inner cavity of the dryer.
[0007] The first chamber and the inner cavity of the dryer are concentrically arranged inside and outside, and the air inlet passage is an air inlet opened on the wall surface between the first chamber and the inner cavity of the dryer.
[0008] The drainage channel is a drainage pipe arranged in the first chamber, one end of the drainage pipe is connected with the inner cavity of the dryer, and the other end of the drainage pipe passes through the partition and is connected with the second chamber.
[0009] The highest point of the water vapor isolation ring is higher than the highest point of the connection between the drain pipe and the partition plate.
[0010] The water suction elbow is a siphon.
[0011] In the rotary joint, the steam channel is located at the outer circle of the condensate channel.
[0012] The inlet of the steam channel is located at the top of the rotary joint, and the outlet of the condensate channel is located at the side of the rotary joint.
[0013] The beneficial effects of the utility model are as follows: during the use of the utility model, the second chamber of the buffer chamber contains a mixture of steam and condensate. The steam first enters the second chamber through the rotary joint, enters the first chamber through the air guide channel, and then enters the inner cavity of the dryer through the air inlet channel. The condensate generated after the steam releases heat flows into the second chamber through the condensate channel; the condensate flows downward between the partition and the water vapor isolation ring, is discharged into the bottom of the second chamber, and is then sucked out by the water suction elbow and discharged through the rotary joint. The water vapor isolation ring realizes the separation of condensate and steam. When steam enters the first chamber through the air guide channel, the water vapor isolation ring prevents the condensate generated in the process of steam entering the first chamber from being entrained, thereby improving the condensate discharge effect. The utility model can realize steam entry and condensate discharge. The steam entry and condensate discharge paths are relatively independent. The material drying effect is good and is not easily affected by condensate. The drying efficiency is high.
[0014] Preferably, the buffer chamber adopts a cylindrical structure, which is convenient for connection with the horizontal dryer and for rotation when driven by the dryer.
[0015] Preferably, the axes of the buffer chamber and the rotary joint coincide with the axis of the inner cavity of the dryer. During operation, the various components are relatively evenly stressed and the structure is more stable.
[0016] Preferably, the first chamber is arranged in the inner cavity of the dryer, and the steam only needs to pass through the wall between the inner cavity of the dryer and the first chamber to quickly reach the inner cavity of the dryer from the first chamber, thereby shortening the steam flow path and improving the drying efficiency.
[0017] Preferably, the drain pipe is arranged inside the first cavity and connects the second cavity with the inner cavity of the dryer, which can avoid the pipe from being exposed and reduce heat loss.
[0018] Preferably, the outlet of the drain pipe is lower than the highest point of the water vapor isolation ring, which can prevent the condensate discharged from the drain pipe from passing over the water vapor isolation ring and contacting the steam, thereby preventing the steam from entraining the condensate.
[0019] Preferably, the water suction elbow is a siphon tube, which can quickly draw away the condensate accumulated at the bottom of the second chamber. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the steam inlet condensate discharge structure of a steam rotary dryer according to an embodiment of the utility model;
[0021] Figure 2 yes Figure 1 The usage status diagram of the steam inlet condensate discharge structure of the steam rotary dryer;
[0022] Figure 3 yes Figure 1 A three-dimensional diagram of the connection between the middle air intake channel and the water vapor isolation ring.
[0023] In the figure: 1-rotating joint, 2-dryer inner cavity, 3-buffer chamber, 3.1-partition, 3.2-first chamber, 3.3-second chamber, 4.1-air inlet, 4.2-air guide channel, 4.3-water vapor isolation ring, 5-air inlet channel, 6-drainage channel, 7-water suction elbow. DETAILED DESCRIPTION
[0024] The utility model is described in detail below with reference to the accompanying drawings and specific embodiments.
[0025] like Figures 1 to 3As shown, a steam inlet and condensate discharge structure of a steam rotary dryer according to an embodiment of the utility model comprises a rotary joint 1, wherein a steam channel and a condensate channel are provided in the rotary joint 1, wherein the steam channel is located at the outer ring of the condensate channel, the inlet of the steam channel is located at the top of the rotary joint 1, and the outlet of the condensate channel is located at the side of the rotary joint 1. A buffer chamber 3 is connected between the rotary joint 1 and the inner cavity 2 of the dryer, wherein a vertical partition 3.1 is provided in the buffer chamber 3, wherein the partition 3.1 divides the space in the buffer chamber 3 into a first chamber 3.2 and a second chamber 3.3, wherein an air inlet hole 4.1 is provided on the partition 3.1 for connecting the first chamber 3.1 and the second chamber 3.2, wherein the air inlet hole 4.1 is located on one side of the first chamber 3.1 and is connected to an air guide channel 4.2, wherein a water vapor isolation ring 4.3 is fixed to the outer side of the air guide channel 4.2, wherein the water vapor isolation ring 4.3 is spaced apart from the partition 3.1, wherein the rotary joint 1 rotates in cooperation with the wall surface of the second chamber 3.3 The outlet of the steam channel of the rotary joint 3.3 faces the air guide channel 4.2, an air inlet channel 5 is connected between the dryer inner cavity 2 and the first chamber 3.2, a drainage channel 6 is connected between the dryer inner cavity 2 and the second chamber 3.3, one end of the drainage channel 6 is connected to the dryer inner cavity 2, and the other end is located between the partition 3.1 and the water vapor isolation ring 4.3, a water suction elbow 7 is connected to the inlet of the condensate channel of the rotary joint 1, the water suction elbow 7 is located in the second chamber 3.3, the water inlet of the water suction elbow 7 is set downward and there is a gap between the wall surface of the second chamber 3.3, and the water suction elbow 7 is a siphon.
[0026] The buffer chamber 3 is a cylindrical structure with a horizontal axis. The axes of the buffer chamber 3 and the rotary joint 1 coincide with the axis of the dryer inner cavity 2. The first chamber 3.2 and the dryer inner cavity 2 are concentrically arranged inside and outside, and the air inlet channel 5 is an air inlet opened on the wall between the first chamber 3.2 and the dryer inner cavity 2.
[0027] The drainage channel 6 is a drainage pipe disposed in the first chamber 3.2, one end of the drainage pipe is connected to the inner cavity of the dryer, and the other end of the drainage pipe passes through the partition 3.1 and is connected to the second chamber 3.3. The highest point of the water vapor isolation ring 4.3 is higher than the highest point of the connection between the drainage pipe and the partition 3.1.
[0028] When the utility model is in use, the steam rotary dryer rotates, and at the same time drives the buffer chamber 3 to rotate, and steam is introduced into the buffer chamber 3 through the rotary joint 1. The steam flow direction is as follows: Figure 2As shown by the hollow arrow, the steam is discharged from the outlet of the steam channel into the second chamber 3.3, and then enters the first chamber 3.2 through the air guide channel 4.2 and the air inlet in sequence, and then enters the dryer cavity 2 through the air inlet channel 5, thereby drying the material; the condensate generated in the dryer cavity 2 after the steam heat exchange and cooling is discharged into the second chamber 3.3 through the drainage channel 6, and the condensate flow direction is as shown in FIG. Figure 2 As shown in the hollow center direction, the condensate flows downward from the space between the partition 3.1 and the water vapor isolation ring 4.3, accumulates at the bottom of the second chamber 3.3, is sucked into the rotary joint 1 under the action of the water suction elbow 7, and is discharged through the drainage channel of the rotary joint 1. The gap between the bottom of the water suction elbow 7 and the wall of the first chamber 3.2 is conducive to the smooth suction of the condensate into the water suction elbow 7. The water vapor isolation ring 4.3 realizes the separation of condensate and steam. When the steam enters the first chamber 3.2, due to the action of the water vapor isolation ring 4.3, the condensate entrainment generated in the process of the steam entering the first chamber 3.2 and the dryer inner cavity 2 is prevented, thereby improving the condensate discharge effect.
[0029] The above embodiment is a preferred embodiment of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements all fall within the scope of the utility model to be protected.
Claims
1. A steam inlet condensate discharge structure of a steam rotary dryer, comprising a rotary joint, a steam channel and a condensate channel being arranged in the rotary joint, characterized in that: A buffer chamber is connected between the rotary joint and the inner cavity of the dryer, and a vertically arranged partition is provided in the buffer chamber. The partition divides the space in the buffer chamber into a first chamber and a second chamber, and an air inlet hole connecting the first chamber and the second chamber is opened on the partition. The air inlet hole is located on one side of the first chamber and is connected to an air guide channel. A water vapor isolation ring is fixed on the outer side of the air guide channel, and the water vapor isolation ring is spaced apart from the partition. The rotary joint rotates with the wall of the second chamber, and the outlet of the steam channel of the rotary joint faces the air guide channel. An air inlet channel is connected between the inner cavity of the dryer and the first chamber, and a drainage channel is connected between the inner cavity of the dryer and the second chamber. One end of the drainage channel is connected to the inner cavity of the dryer and the other end is located between the partition and the water vapor isolation ring. A water suction elbow is connected to the inlet of the condensate channel of the rotary joint, and the water suction elbow is located in the second chamber. The water inlet of the water suction elbow is arranged downward and has a gap between the wall of the second chamber.
2. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 1, characterized in that: The buffer chamber is a cylindrical structure with a horizontal axis.
3. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 2, characterized in that: The axes of the buffer chamber and the rotary joint coincide with the axis of the inner cavity of the dryer.
4. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 2, characterized in that: The first chamber and the inner cavity of the dryer are concentrically arranged inside and outside, and the air inlet passage is an air inlet opened on the wall surface between the first chamber and the inner cavity of the dryer.
5. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 1, characterized in that: The drainage channel is a drainage pipe arranged in the first chamber, one end of the drainage pipe is connected with the inner cavity of the dryer, and the other end of the drainage pipe passes through the partition and is connected with the second chamber.
6. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 5, characterized in that: The highest point of the water vapor isolation ring is higher than the highest point of the connection between the drain pipe and the partition plate.
7. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 1, characterized in that: The water suction elbow is a siphon.
8. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 1, characterized in that: In the rotary joint, the steam channel is located at the outer circle of the condensate channel.
9. The steam inlet condensate discharge structure of the steam rotary dryer according to claim 1, characterized in that: The inlet of the steam channel is located at the top of the rotary joint, and the outlet of the condensate channel is located at the side of the rotary joint.